Drug interactions
Dimenhydrinate + Mirtazapine
Severity: Moderate
Dimenhydrinate and Mirtazapine: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Dimenhydrinate contains diphenhydramine, a sedating antihistamine, and combined with mirtazapine can produce marked drowsiness and impaired coordination. Older adults may also experience confusion from anticholinergic effects.
What this interaction means in plain words
Dimenhydrinate and Mirtazapine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Dimenhydrinate belongs to Respiratory; Mirtazapine belongs to Central Nervous System.
Why it happens
Additive H1 antagonism and CNS depression.
What to do
Avoid driving and alcohol while combined and use the lowest effective antihistamine dose. Consider a non-sedating alternative in older patients.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Mirtazapine
- Isocarboxazid + Mirtazapine Contraindicated
- Mirtazapine + Phenelzine Contraindicated
- Mirtazapine + Pimozide Contraindicated
- Mirtazapine + Procarbazine Contraindicated
- Mirtazapine + Rasagiline Contraindicated
- Mirtazapine + Selegiline Contraindicated
Other interactions of Dimenhydrinate
Frequently asked questions
Can I take Dimenhydrinate with Mirtazapine?
MediHelp rates the interaction as moderate. Dimenhydrinate and Mirtazapine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Dimenhydrinate contains diphenhydramine, a sedating antihistamine, and combined with mirtazapine can produce marked drowsiness and impaired coordination. Older adults may also experience confusion from anticholinergic effects.
How serious is the interaction between Dimenhydrinate and Mirtazapine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid driving and alcohol while combined and use the lowest effective antihistamine dose. Consider a non-sedating alternative in older patients.
What other medicines interact with Mirtazapine?
MediHelp also lists interactions of Mirtazapine with, for example, Isocarboxazid, Phenelzine, Pimozide. The full list is on the Mirtazapine page.
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